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Sustainability and Training Materials for In-Place Recycling

Hot and cold in-place recycling techniques recycle one-hundred percent of a hot mix asphalt (HMA) pavement during the maintenance and rehabilitation process. The three most common agency reported drawbacks to in-place recycling usage are: 1) lack of data on performance benefits, 2) lack of guidelines on construction procedures (training materials), and 3) limited information on input parameters for pavement thickness design. There is a need to provide pavement design professionals and highway agencies with the knowledge and tools necessary to use in-place pavement recycling as a feasible, sustainable, competitive alternative to traditional pavement maintenance and rehabilitation strategies. The two main objectives of this study are to develop (1) a sustainability calculator for in-place recycling and (2) training materials regarding in-place recycling for use in web-based training courses. The study will quantify the on-site fuel consumption and emissions of nitrogen oxides (NO&amp;#8339;), particulate matter (PM), hydrocarbons (HC), carbon monoxide (CO), and carbon dioxide (CO&amp;#8322;) resulting from various asphalt recycling procedures, including cold in-place recycling (CIR), hot in-place recycling (HIR), and full-depth recycling (FDR). The major outcome of this study will be a methodology that compares the on-site energy and environmental impacts of each of the recycling procedures to conventional asphalt construction. The major output of this study will be a spreadsheet-based fuel use and emissions calculator that will be made available for widespread use by owners, contractors, practitioners, policy-makers, and other asphalt industry stakeholders. Additionally, an interactive web based training course will be made available to students and agency personnel working with or wanting more information on hot-in-place recycling and full depth reclamation. Implementation will provide pavement design professionals and highway agencies with the knowledge and tools necessary to use in-place pavement recycling as a feasible, sustainable, competitive alternative to traditional pavement maintenance and rehabilitation strategies.

Language

English

Project

Status: Active

Funding: $79716.00

Contract Numbers:

DTRT13-G-UTC36

SPTC 14.2-12

Sponsor Organizations:

Asphalt Recycling & Reclaiming Association

#3 Church Circle - PMB 250Annapolis, Maryland
United States
21501

Research and Innovative Technology Administration

University Transportation Centers Program1200 New Jersey Avenue, SEWashington, DC
United States
20590

Performing Organizations:

Oklahoma State University, Stillwater

School of Civil & Environmental Engineering207 Engineering SouthStillwater, OK
United States
74078